The effect of curing on the ingress of chlorides into concrete was investigated. In addition to determining chloride profiles on samples prepared in the standard manner, a parallel series of tests was carried out on concrete which had previously been subjected to 14 days of leaching in an aqueous environment. The results obtained highlighted two important conclusions. Firstly, chloride ingress was found to increase with improvement in curing for the leached concrete. Similar trends were observed up to a depth of approximately 10 mm for unleached samples. Thus it appears that the conventional assumption that improved curing results in a more durable concrete may not always be true. Secondly, the existence of a new mechanism for the ingress of chloride ions in saturated concrete, termed ‘leaching absorption’, was discovered. This mechanism results from the increased leaching of Ca(OH)2 with increasing duration of the initial moist curing period.
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October 2000
Research Article|
October 01 2000
Effect of concrete curing on chloride ion ingress Available to Purchase
S. R. Hillier;
S. R. Hillier
*
Lafarge Redland Aggregates Ltd, Contracting Division
Midland Region, The Horseshoe, Mountsorrel, Loughborough, Leicestershire, LE12 762
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C. M. Sangha;
C. M. Sangha
†
Department of Civil Engineering, University of Portsmouth
Burnaby Building, Burnaby Road, Portsmouth, Hampshire, P01 3QL
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B. A. Plunkett;
B. A. Plunkett
†
Department of Civil Engineering, University of Portsmouth
Burnaby Building, Burnaby Road, Portsmouth, Hampshire, P01 3QL
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P. J. Walden
P. J. Walden
†
Department of Civil Engineering, University of Portsmouth
Burnaby Building, Burnaby Road, Portsmouth, Hampshire, P01 3QL
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Publisher: Emerald Publishing
Received:
December 07 1998
Revision Received:
February 29 2000
Accepted:
May 11 2000
Online ISSN: 1751-763X
Print ISSN: 0024-9831
© 2000 Thomas Telford Ltd
2000
Magazine of Concrete Research (2000) 52 (5): 321–327.
Article history
Received:
December 07 1998
Revision Received:
February 29 2000
Accepted:
May 11 2000
Citation
Hillier SR, Sangha CM, Plunkett BA, Walden PJ (2000), "Effect of concrete curing on chloride ion ingress". Magazine of Concrete Research, Vol. 52 No. 5 pp. 321–327, doi: https://doi.org/10.1680/macr.2000.52.5.321
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